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A PSI to bar converter converts pressure between the imperial unit pounds per square inch (PSI) and the metric unit bar. Used for tyre pressure, hydraulic systems, and industrial equipment.
Formule
bar = PSI × 0.0689476
- PSI
- Pounds per square inch (PSI) — Imperial pressure unit
- bar
- Bar (bar) — Metric pressure unit; 1 bar ≈ atmospheric pressure
Guide étape par étape
- 11 bar = 14.5038 PSI
- 21 PSI = 0.0689476 bar
- 3Bar = PSI × 0.0689476
- 4Standard atmospheric pressure = 14.696 PSI = 1.01325 bar
Exemples résolus
Entrée
35 PSI (car tyre)
Résultat
2.41 bar
Entrée
100 PSI (bicycle tyre)
Résultat
6.89 bar
Entrée
3 bar (recommended tyre)
Résultat
43.5 PSI
Questions fréquentes
What is 1 bar in PSI?
1 bar = 14.5038 PSI. Atmospheric pressure is about 1 bar = 14.7 PSI.
What tyre pressure should I use?
Most cars recommend 30–35 PSI (2.1–2.4 bar). Check your vehicle manual or door jamb label. Under-inflation wastes fuel and generates heat.
Are bar and atmosphere the same?
Close: 1 bar = 100,000 Pa; 1 atm = 101,325 Pa. The difference is small (about 1%) for practical purposes.
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